header{
    background-color: white;
    height:80px;
    width: 100%;
    position: relative;
    display: flex;  
    justify-content: space-between;   
    align-items: center;   
    padding: 0 20px; 

} 
header ul {  
    display: flex;  
    list-style: none;  
    margin: 0; 
    padding: 0; 
    height: 100%;  
}  

header li{
    display: inline;
    margin-right: 4vw;
}
    header ul{
        position: absolute;
        top:0;
        right: 5px;
        line-height: 50p;
}
header a{
    color:black;
    text-decoration: none;
}
header a:hover{
    text-decoration: underline;
}
.content {  
    padding: 20px;  
    font-family: Arial, sans-serif;  
    text-align: center;  
    background-color: rgba(255, 255, 255, 0.8); 
    padding-top: 100px; 
}
.line{
    padding: 0%;
    margin: 0%;
}
li {  
    display: inline-block; 
    margin-right: 20px; 
}  